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| author | Feng Zhou <zhoufeng.zf@bytedance.com> | 2022-05-11 12:38:53 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-05-12 04:16:54 +0300 |
| commit | 07343110b293456d30393e89b86c4dee1ac051c8 (patch) | |
| tree | 61054fae2b7d0c6ea163a0eeaf272501f1ba470f /kernel/trace | |
| parent | 571b8739dd6df6d41bdcc83ed50b481a27af912c (diff) | |
| download | linux-07343110b293456d30393e89b86c4dee1ac051c8.tar.xz | |
bpf: add bpf_map_lookup_percpu_elem for percpu map
Add new ebpf helpers bpf_map_lookup_percpu_elem.
The implementation method is relatively simple, refer to the implementation
method of map_lookup_elem of percpu map, increase the parameters of cpu, and
obtain it according to the specified cpu.
Signed-off-by: Feng Zhou <zhoufeng.zf@bytedance.com>
Link: https://lore.kernel.org/r/20220511093854.411-2-zhoufeng.zf@bytedance.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/bpf_trace.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index 2eaac094caf8..7141ca8a1c2d 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -1197,6 +1197,8 @@ bpf_tracing_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) return &bpf_map_pop_elem_proto; case BPF_FUNC_map_peek_elem: return &bpf_map_peek_elem_proto; + case BPF_FUNC_map_lookup_percpu_elem: + return &bpf_map_lookup_percpu_elem_proto; case BPF_FUNC_ktime_get_ns: return &bpf_ktime_get_ns_proto; case BPF_FUNC_ktime_get_boot_ns: |